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Baxi Boston 2 RS

Floor Standing Room Sealed
Gas Fired Central Heating Boilers

Comp No 235322 – Iss 5 – 6/00

Please leave these instructions with the User

Installation and
Servicing Instructions

Summary of Contents for Boston 2 40 RS

Page 1: ...Baxi Boston 2 RS Floor Standing Room Sealed Gas Fired Central Heating Boilers Comp No 235322 Iss 5 6 00 Please leave these instructions with the User Installation and Servicing Instructions ...

Page 2: ...the unit to be fitted under a work top The pump cannot be fitted in the case in this type of application See PUMP All appliances are designed for use on Gas Type G20 Natural Gas only at supply pressure 20 mb Each appliance consists essentially of three components namely 1 COMBUSTION CHAMBER with heat exchanger burner controls and inlet of air duct 2 OUTER CASE 3 BALANCED FLUE TERMINAL Benchmark Lo...

Page 3: ...nts nationwide When ordering a terminal guard quote the appliance model number The guard manufacturers listed below can be contacted for terminal sizes and guard model numbers VENTILATION Detailed recommendations for air supply are given in BS 5440 2 The room in which the boiler is installed does not require a purpose provided air vent When the boiler is installed in a purpose made cupboard air ve...

Page 4: ...se copper pipe for the boiler Flow and Return The copper must extend at least 1 metre from the boiler and include any branches The copper pipe must not be insulated GAS SUPPLY The gas connection is located at the bottom left hand side of the appliance and is Rc in B S P T internal Ensure that the pipework from the meter to the appliance is of adequate size Do not use pipes of a smaller size than t...

Page 5: ...d Pipe sizes are suitable for the system design PUMP Fig 5 A suitable pump e g Grundfos UPS 15 50 15 60 or equivalent Myson or Wilo with ball type isolating valves and 22mm compression fittings may be fitted inside the outer case The pump should be connected to the in flow connection on the front of the heat exchanger using the following standard fittings A 1 off Elbow BSP male x BSP female B 1 of...

Page 6: ...Fitting the Appliance page 6 ...

Page 7: ...arrying conductors become taut before the earthing conductor if the cable should slip out of the cable grip 1 With the outer case assembled as in Outer Case 1 4 remove the 2 screws securing the thermostat cover to the facia panel 2 Fit the input cable to the terminal strip and clamp using the cable grip provided and clamp the incoming cable into the cable clips provided on the outer case side pane...

Page 8: ...inder must be used If a self priming indirect type is employed it must be of adequate size and applied strictly in accordance with the cylinder manufacturers instructions FUEL ECONOMY Better fuel economy is achieved by exercising control of the boiler by means of a room thermostat and or a cylinder thermostat as appropriate ALLOWING THE BOILER TO CYCLE ON THE BOILER THERMOSTAT DOES NOT PRODUCE THE...

Page 9: ...ght the pilot as previously described Operate the burner and allow the system to reach normal operating temperature Make further checks for leaks and check the burner setting pressure adjusting if necessary This is done by adjusting the throttle screw red plastic surround in either direction as required Fig 7 Remove the pressure gauge and tighten the pressure test point sealing screw The boiler an...

Page 10: ... c Remove the injector from the feed pipe clean and replace 15 Clean the pilot as follows Unscrew the pilot tubing nuts at both ends and remove the pilot tube Remove and clean the pilot injector and clean the pilot shroud Fig 15 16 Re assemble the pilot components and then the burner in reverse order of dismantling 17 Refit the burner and controls assembly checking that the door seal is undamaged ...

Page 11: ...Servicing the Unit page 11 ...

Page 12: ...uple nuts at the valve and at the pilot bracket 3 Disconnect the pilot feed pipe at the valve and at the pilot bracket ensuring that the pilot injector is not misplaced 4 Disconnect the electrode lead and remove the piezo unit 5 Remove the screw securing the electrical terminal cover to the gas valve Disconnect the electrical connections 6 Remove the valve complete with the heat shield and inlet p...

Page 13: ...Changing Components page 13 ...

Page 14: ...Short Parts List page 14 Click here for Helplines ...

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